Locomotive-fire-box construction.



LE damn PARISH. LOUOHUTIVB F133 30]! CONSTRUCTION.

nnwuxon Mann "M815, 1914. 1,110,815. Patented Sept-15,1914.

, UNITED STATES PATENT. OFFICE.

LocomocrrirE-rnm-sox oons'rnuc'rron.

Specification of Letters Patent.

rammed sepia. 15, 1914.

Application flied June us, i914. semi No. 545,079.

To all whom it may concern Be it known that I, Ls Guano Patent, 0. citizen-of the United States, residing in the borough of Manhattan, in the county, city, and State of New York, have invented certain new and useful Improvements in Locomotived ire-Box Construction, of which the following is a specification.

My invention relates to an improved arrangement of circulating arch tubes in a locomotive lire-box whereby increased and more constant circulation of the Water between the dillerent )arts of the fire-box is obtained, while at t 10 same time the tubes are so arran ed that it is possible to support the individual bricks constituting the refractory arch accessibly and removabl nn-any of the tubes. In connection witi the foregoing, my invention contemplates the protection and the prolongation of the life of the refractory arch by virtue of the improved arrangement of the tubes whereby the bricks are subjected to the beneficial coolingaetion of the tubes; and the arrangement of the tubes of the fire-box in such manner that greater elliciency with res ect to the quantityof fuel consumed am better and more complete combustionof the gases, is obtained. n general, my invention contemplates the provision of an improved arrangement of the tubes whereb teristics and 1N vantages described, whici can be readily installed in standard locomotive coustructions, and presents no obstruction in assembling, removal, replace-v ment, repair, or inspection of the various com )onent parts of the fire-box.

'1 o foregoing objects, as well as such as may hereinafter appear or are incident to my invention, I attain by means of a construction which I have illustrated in preferred form in the accompanying drawin ,wherein '1 are 1 is a longitudinal section through the iIO-bOX of a locomotive illustrating my invention a plied thereto; Fi 2 is a section througl i the device of ig. 1 taken on the line IIII of said figure; and Fig. 8 is a transverse section similar to that of Fig. 2 but illustrating an arrangement whereby the refractory arch is supported on tubes extending in different planes.

Referring now to the drawings, it will be seen that the fire-box illustrated is of the standard type for locomotives and is corn need of an inside fire-box oom rising 'atu esbeet 1-, side sheets 2', a'back s lost 3, and :a crown sheet 4;- -an outside fire-box comprising the throat sheet 1, side' sheets 2", a back sheet 3, and'a to or cover sheet 4. The water spaces at tie front, sides and rear of the ire-box are closed by a mud ring 5. The sheets on opposite sides of the water spaces are secured or connected together by the stay bolts 0, while the crown sheet and cover sheet are connected by radial stay bolts 7. At the front of the inner firebox, the tube sheet-1 is carried up to provide the usual llue sheet 13 into a iicli the ends of the fines 12 are fastened. The parts thus far described are of the usual construction.

Attention is now directed tothe circulation and arch tubes. It will be seen that I have arranged two rows of circulation tubes 8 and 8", which-extend rearwardly a'mlu wardly from thetnbe sheetl' to the back 5 est 8, and connect the front and rear water spaces of the fire-box. Each row is preferably eom weed of four tubes, the tubes of onetrow lying above the tubes in-the other inzorder to permit-of the plaeing'of the arch bricks 0 in proper position, and'also to afford sufllcient space to permit ofworkman getting between the to ice to mukerepairs to the flue sheet or fines. This arrangement also does not interfere with the inspection or repair of the stay-bolts, which is of im ortance. Access is had to the intorior o the tubes by means of the washout plugs-l0 andll, respectively located in the ack sheet 3' and throat sheet 1.

I have found by experience that this construction increases, and in fact practically doubles the circulation between the water walls of the lire-box, which of course results in added elliciency to the fire-box Without incrcasin the quantity of fuel consumed.

In ad ition to the advantages herein set forth, either of the rows of circulation tubes may serve as a means for supporting the brick arch of the fire-box, or they may be supported on some tubes of both rows as shown in Fig. 3. As shown in Figs. 1 and 2, the arch is supported on the lower row 8 of the tubes, a particular advantage residing in this arrangement because the combustion of the gases in the lire-box is not retarded, but

assisted. It has been found that complete combustion of the gases in the lire-box is delayed where the gases come in contact with the relatively cool surfaces of the circulating tubes, and it will be clear that in a construction such as that described, there will be considerable cooling action because of the larger number of tubes. By supporting the arch on the lower tubes, the'gases do not 'come directly in contact with the upper tubes and combustion is not dela ed, while at the same time the advantages 0 increased circulation and general efficiency are obtained. In the construction shown in Fig. 3, the arch bricks are supported on both rows of tubes, extending transversely across the fire-box, and presenting an irregular profile in cross section. By this arrangement, the arch provides mixing channels or 3 aces which modify the direction of the ow of the products of combustion, and secure an intimate admixture of the gases which results in more perfect and complete combustion.

An additional advantage is obtained by the foregoing constructions with respect to the arch 9, inasmuch as it will be clear that the upper surfaces of the bricks are to some cxtentprotccted by the circulation tubesthrough which there is a flow of relatively cool water from the firebox walls absorbing a port-ion of the heat passing over the arch. This prolongs the life of the bricks.

It will thus be seen that the individual bricks eonstitutiu the refractory arch can be remorably am accessibly supported on any of the tubes, and that free access is had not only in assembling, but also in removal, repair, replacement, or inspection. The utility of the arrangement herein described is further shown in the developments illustrated' and described in my co-pending applications Serial Nos. 838,652, 838,653, and 838,654, filed May 16, 1914, which contain subject matter not herein specifically claimed.

I claim 1. A locomotive fire-box comprising in combination with water spaces, a plurality of circulating tubes extending rearwardly and upwardly from one water space to am other and arranged in two rows, spaced one substantially above the other, with the tubes in substantial parallelism whereby an arch brick wall supported on any of the tubes can be accessibly and removably supported thereby.

2. A locomotive fire-box comprising in combination with water spaces, a plurality of circulating tubes extending rearwardly and upwardly fromone water space to am other and arranged in two rows, one above the other, and an arch wall supported on the tubes of the lower row and extending rearwardly from a point adjacent the forward end of the tubes a portion of the distance to the rear water space, the said wall protecting the tubes of the upper row from direct contact with the intense heat but subjecting said tubes to the action of the hot gases passing from the rear of the wall forwardly above the wall.

3. A locomotive fire-box comprising in combination with water spaces, a plurality of circulating tubes extending rearwardly and upwardly from one water space to another aud arranged in two rows, spaced one a hove the other with the tubes in substantial parallelism and one located-above the other whereby an arch brick wall can'be accessibly and reinovably suppo ted on one ofthe rows of'tnbes.

In testimony whereof I have hereunto. signed my name in the presence of the two subscribed witnesses.

LEGRAND PARTSH. 'itnesscs:

Lama L. MYERs, H. B. Smrnaucn.

copiu of this patent may be obtained for an cents each, by addressing the "commissioner it return, Washington, D. C."

led

'notonly in assembling, but also in removal,

Correction In Letters Patent No. 1,1 10,815

delayed where the gases :come in contact with the relatively cool surfaces of the circulating tubes, and it will be clear that in a construction such as that described, there will be considerable cooling action because of the larger number of tubes. By supportingthearc'h on the lower tubes the gases do not come directly in contact w1th the upper tubes and combustion is not dela 'cd, while at the same time the advantages 0 increased circulation and general efficiency are obtained. In the construction shown in Fig. 3, the arch bricks are supported on both rows oi tubes, extending transversely across the fire-box, and presenting an irregular profile in cross section. By this arrangement, the arch provides mixing channels or s aces which modify the direction of the ow of the products of combustion, and secure an intimate admixture of the gases which results in more perfect and complete combustion.

"An additional advantage is obtained by the foregoing constructions with respect to the arch 9, inasmuch as it will be clear that the upper surfaces of the bricks are to some extent protected by the circulation tubes through which there is a (low of relatively cool water from the fire box walls absorbing a portion of the heat passing over the arch. This prolongs the life of the bricks.

It will thus be seen that the individual bricks constituting the refractory arch can be removably and accessibly supported on any of the tubes, and that free access is bad re )air, replacement, or inspection. The utility of the arrangement herein described is further shown in the developments illustrated and described in my co pending applications Serial Nos. 838,652, 838,653, and 838,654, filed May 16, 1914, which contain subject matter not herein specifically claimed.

Uopie: ol-thls patent may be obtained for five cents case in the Patent Ofiice.

[sun] tubes whereby read barring the charac-;

Signed and scab -l this 6th day of October, A. D., 1914.

1. A locomotive fire-box comprising in combination with water spaces, a plurality of circulating tubes extending rearwardly and upwardly from one water space to another and arranged in two rows, spaced one substantially above the other, with the tubes in substantial parallelism whereby an arch brick wall supported on any of'the tubes can be accessibly and removably supported thereby.

A locomotive fire-box comprising in combination with waterspaces, a plurality of circulating tubes extending rearwardly and upwardly from one water space to a .n

other and arranged in two rows, one above the other, and an arch wall supported on the tubes of the lower row and extending rearwardly from a point adjacent the forward end of the tubes a portion of the distance to the rear water space, the said wall protecting the tubes of the upper row from direct contact with the intense heat but subjecting said tubes to the action of the hot gases passing from the rear of the wall forwardly above the wall.

' 3. A locomotive fire-box comprising in combination with waterspaces, a plurality of circulating tubes extending rcarwardly and upwardly from one water space to another and arranged in two rows, spaced one above the other with the tubes in substantial parallelism and one located-above the other whereby an arch brick wall can'be accessibly and rcmcvably suppo'tcd on one ofthe rows oftu'bes. i

In testimony whereof I 1111\6 hereunto signed my name in the presence of the two subscribed witnesses.

LE GRAND PAR-l SH.

\Vituesses EMILY L. Myrna, H. B. Snarnauon.

each, by addresshig' the commissioner it Intent; Walhington, D. 0."

1t 18 hereby certiticd that in Letters l'ateutNo. 1,110,815, granted September 15,

1914, upon the application of LeGrand Parish, of New York, N. Y., for an improvement in Locomotive-Fire-Box Construction, an error appears in the printed specification requiring correction as follows: Page 1, line 31, for the words of the read with this correction therein that the same may conform to the I record of the a. F. wm'rarman, 40a Commissioner of Patents.

and that the said Letters Patent should-"be in is hereby certified that in Letters Patent No. 1,110,815, granted September 16,

1914, upon the application of LcGmnd Parish, of New York, N. Y., for an improvement in Locomotive-Fire-Box Construction, an error appears in the printed specification requiring correction as follows: Page 1, line 31, for the worth of the tubes whereby reed having the ckarad-; and that the said Letters Patent should be read with this correction therein that the same may conform to the reoord of the case in the Patent. Office.

Signed and se.' l| 1 this 6th day of October, A. D., 1914.

R. F. WHITEHEAD, 4mm Gammiuion'er BfPmu.

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